I'm also interested in seeing what people do with these . I shoot M full time, but it's crossed my mind that i could configure C1 for indoor/low light, and C2 for outdoor sunlight or something like that... Any feedback?

Many/most of the C.Fn settings also apply to the C# custom settings, and the 1-series has a lot of C.Fn's. But...the 1D X is the first 1-series to have the C# options. Some experimentation will be in order.

I chose those settings for C3 based on a mode dial - it's easy to spin until it stops when in a hurry. I have yet to decide how I'll do that on the 1D X, and I may replace C2 with a low light people shooting setting (Av, auto ISO, min shutter of 1/80 or 1/100 s).

Many/most of the C.Fn settings also apply to the C# custom settings...

Make that 'All of the C.Fn settings...'

Anything and everything saved to the C# custom settings is independent of what is set in any of the other modes -- as it should be.

All of them? So...that would include C.Fn III-8 on your 5DII, AF Microadjustment, right? Meaning, if you get a new lens, you need to go in and update that C.Fn for all your C# settings? Except....you don't, and that's certainly, 'as it should be,' in my opinion. I could go digging in the manual (IIRC there's a list of settings stored with C# modes), and possibly find others. But...AFMA is definitely not stored independently with regular and each C# mode, and that was the basis of my statement, "Many/most of the C.Fn settings..."

Many/most of the C.Fn settings also apply to the C# custom settings...

Make that 'All of the C.Fn settings...'

Anything and everything saved to the C# custom settings is independent of what is set in any of the other modes -- as it should be.

All of them? So...that would include C.Fn III-8 on your 5DII, AF Microadjustment, right? Meaning, if you get a new lens, you need to go in and update that C.Fn for all your C# settings? Except....you don't, and that's certainly, 'as it should be,' in my opinion. I could go digging in the manual (IIRC there's a list of settings stored with C# modes), and possibly find others. But...AFMA is definitely not stored independently with regular and each C# mode, and that was the basis of my statement, "Many/most of the C.Fn settings..."

Sorry, I thought I'd read that it was all, but AFMA does make sense to be universal (and the focusing screen). (I've never bothered with AFMA, so I didn't realize).

Sorry, I thought I'd read that it was all, but AFMA does make sense to be universal (and the focusing screen). (I've never bothered with AFMA, so I didn't realize).

Focusing screen - good point!

OTOH, on the 5DIII I think AFMA is now a regular menu option, not a C.Fn, and no other focus screens are supported, so on that body it may, indeed, be the case that all C.Fn's are independently stored in the C# options.

Oh...those. No clue. And what's this green thing on there, too? And -- hey! I've got a TV built into my camera! Who'd'a thunk? And a P? Is that for using the Shorty McForty? Can't be...I got the camera before they started selling it....

if you set C3 to high speed multi frame, AI servo, auto iso, etc.(spray & pray mode) then if something suddenly happens ie: seeing a famous person or a wild animal etc, then you can just rotate the dial as far as it goes and you are ready to shoot.

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ruuneos

if you set C3 to high speed multi frame, AI servo, auto iso, etc.(spray & pray mode) then if something suddenly happens ie: seeing a famous person or a wild animal etc, then you can just rotate the dial as far as it goes and you are ready to shoot.